Freelance Senior Quantity Surveyor

Senior Quantity Surveyor – Civil Engineering

Freelance | Hybrid | Banbury | Long Term Contract

Our client is a major infrastructure delivery partner working on one of the UK’s most significant rail projects. Formed through a collaboration of leading international contractors, they bring together extensive expertise across design, construction, and large-scale civil engineering delivery. With a strong footprint in infrastructure, they are recognised for delivering complex projects including rail, structures, and heavy civils, with a focus on quality, collaboration, and long‑term project excellence.

Due to ongoing project demands, our client is seeking an experienced Senior Quantity Surveyor to join their commercial team on a freelance basis. This hybrid role will be based out of their Chipping Warden site, offering a mix of site and remote working. Reporting into the senior Commercial team, you will take responsibility for delivering key commercial functions across your section of works, while also supporting and mentoring junior team members.

You will be expected to work both independently and collaboratively, ensuring commercial objectives are achieved in line with project deadlines.

• Preparation and agreement of variation accounts (main contract and subcontract)
• Monitoring cost against targets and evaluating project performance
• Tracking contract progress against programmes and work plans
• Input into change control procedures including EOTs, delays, and performance adjustments
• Preparation and agreement of interim valuations, final accounts, and subcontract final accounts
• Subcontract administration including certification and payment processes
• Providing contractual advice to management, ensuring compliance with obligations and notices
• Identification and management of commercial risks and opportunities
• Negotiation and resolution of disputes
• Mentoring and supporting junior commercial staff where required

• Degree qualified in Quantity Surveying or equivalent
• Working towards or holding professional membership (RICS, CICES or similar)
• Proven experience operating at Quantity Surveyor level within a civil engineering environment
• Strong track record of delivering positive commercial outcomes on infrastructure projects
• Good understanding of contracts, cost management, and commercial reporting
• Ability to work independently while supporting wider team objectives
• Strong communication and stakeholder management skills
• Full UK driving licence and access to a vehicle
• Valid CSCS card

Technical

Skills:

• Strong understanding of cost control, valuations, and contract administration
• Experience managing change control processes and commercial reporting
• Ability to provide strategic commercial input into projects

People

Skills:

• Strong communication and negotiation skills
• Ability to build effective relationships across multidisciplinary teams
• Proactive, organised, and detail‑oriented
• Leadership and mentoring capability